Check array index : inArray « jQuery « JavaScript Tutorial

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
              var arr = [ 4, "A", 8, "B" ];

              alert(jQuery.inArray("A", arr));


        });
    </script>
  </head>
  <body>
    <body>
        <p></p><p></p><p></p>
    </body>
</html>

30.54.inArray
	30.54.1.	Check array index